CN2084397U - Integral pressing cold rolling machine frame - Google Patents
Integral pressing cold rolling machine frame Download PDFInfo
- Publication number
- CN2084397U CN2084397U CN 90219189 CN90219189U CN2084397U CN 2084397 U CN2084397 U CN 2084397U CN 90219189 CN90219189 CN 90219189 CN 90219189 U CN90219189 U CN 90219189U CN 2084397 U CN2084397 U CN 2084397U
- Authority
- CN
- China
- Prior art keywords
- roll
- hydrostatic support
- roller
- support body
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to an integral hydrostatic support and press cold rolling machine frame which is used for rolling thin plate strip materials and thinnest strip materials. The full-length of the roll body of a roller adopts the integral hydrostatic support and press (up) to cause the roller not to generate elastic bending deformation during rolling, which ensures that the transverse gauge of the rolling machine has high precision and good plate shape. The utility model overcomes the weakness that the double fulcrum support and double fulcrum press of the roller of the traditional rolling machine causes the rollers to be generate elastic bending deformation to cause the cross section of rolling pieces to appear a secondary curve form. The bending moment of the roller is eliminated to cause the stiffness of the rolling machine and the strength of the roller to be obviously enhanced, and the utility model can replace the work of a rolling machine with a plurality of the rollers. The utility model has the advantages of simple structure, strong stiffness, large bearing capacity, high precision of products, etc.
Description
The utility model relates to the cold-rolling mill support of a kind of rolled sheet metal band and ultra-thin strip.
As everyone knows, cold-rolled plate and strip and foil occupy extremely important position in national economy.Along with development and national economy, not only more and more to its quantitative requirement, and it is also strict day by day to its quality requirement, particularly in recent years because the constantly perfect and extensive use of AGC system (automatic gauge control system), the longitudinal thickness precision of strip is more and more higher, and the transverse gage precision of strip and strip shape quality just become and become increasingly conspicuous by contrast.
Hot rolling and cold-rolled plate and strip all have common characteristic, and except that the portion of strip limit, 90% middle strip section roughly has the feature of conic section.The difference of strip center thickness and limit portion representative point place thickness is called strip crown.Strip transverse gage precision in the big or small direct representation of strip crown.Existing in of strip crown caused plate shape bad when rolling, and the strip shape quality difference has caused the very big loss of Rolling Production, and strip crown is having a strong impact on the strip quality simultaneously.Therefore, the thickness difference of further eliminating strip is China and concentrates a problem that solves in the world at present.
In recent decades, solve that the research work of strip thickness difference carries out very active also obtained bigger progress, the whole bag of tricks of plate shape and strip crown occurred improving.What have starts with from technology, for example changes rolling procedure, adjusts the roller heat convex degree learning distribution, changes tension distribution etc.But more method is to start with from equipment, obtains by improving equipment or strengthens the means of improving plate shape and strip crown, for example hydraulic bending roll, Double bearing support working roller bending, HC milling train or the like.No matter but existing milling train is two-roller mill, four-high mill or multi-roll mill, its basic version is as shown in Figure 1: roll is to add bearing supporting (two point supporting) by two ends always, obtains required roll-force (two fulcrums are depressed) by depressing (or pressing) bearing block.This version, roll certainly leads to very big moment of flexure under the effect of roll-force and two ends concentrfated load.Elastic bending deflection takes place in roll inevitably under the effect of moment of flexure, the elastic bending deflection of roll has caused the strip section to present conic section shape, has caused the transverse thickness difference of strip material.This shows that the elastic bending deflection of roll is the deadly defect that the two fulcrums of the two point supportings of present all kinds of milling train are depressed form.
For a long time, people do a lot of work in order to reduce roll elastic deformation, have taked a lot of effective measures, conclude and get up can be divided into two big classes:
1, reduce the roll elastic bending deflection, adopt four rollers and multi-roll mill:
Compare with two-roller mill, four-high mill has tangible advantage, the four-high mill working roll can be with less roller directly, so under the same conditions, reduce roll-force and reduced minimum rolled thickness, and its major diameter backing roll has born main moment of flexure, and bigger rigidity is provided, and makes the thickness difference in length and breadth of strip can both obtain very big improvement.In order to obtain required roll rigidity, backing roll is often made square (being that roller diameter is approximately equal to barrel length) even like this, still can not solve the convexity phenomenon of strip, and the elastic bending deflection problem of roll remains a thorny problem in the Rolling Production.
In order to produce thin and ultra-thin strip, for continuing to increase the rigidity of roller system, milling train has worked out multi-roll mills such as six rollers, eight rollers, 12 rollers, 16 rollers, 20 rollers in succession to the multiple roll development.Multiple roll supports the rigidity that has increased roller system significantly, and by regulating roll forming and other series of process measure, can obtain the higher thin and ultra-thin strip of dimensional accuracy.But, because the increase of roll number has brought series of malpractice: as be subjected to the violent heating of roll parts and the restriction of heavy closed frame heat conductivility to make mill speed lower, the complicated milling train element precision height that requires of structure causes processing difficulties.Simultaneously, use, adjustment and roll change complexity increase or the like because the touch roll number causes the milling train unused power more.The basic design philosophy of these milling trains is utilized the superiority of minor diameter working roll with being based on fullest, utilizes the rigidity that improve roller system that support, to reduce the influence of roll flexural deformation to strip material precision more.
2, change roll crown, carry out the control of plate shape:
Roll-force, raw material convexity, roll crown, tension force and roll contact condition etc. all affect strip shape quality, can find but anatomize, the most of factor that influences plate shape is all with traditional supporting form of milling train with to depress form relevant, and many problems all result from the flexural deformation of roll.In order to address this problem, people give working roll and backing roll with the method for machining to have certain convexity earlier.This method all has some improvement to the strip crown and the plate shape of strip material, but problem also is conspicuous: promptly different rolling mill practice condition (differences such as roll-force, temperature, supplied materials convexity) just needs different roll crowns.Because the initial convexity of roll is little usually, therefore not only brings difficulty, and need the spare roll of a lot of different convexitys to Roller Machining.Main is: the operation of rolling is a complicated physical process, and it is out of the question that the elastic bending deflection of maintenance roll immobilizes.So this method is difficult to adjust desirable plate shape.
In recent years, SUMITOMO CHEMICAL metal industry company develops a kind of VC roll (Variable Crown), the convexity of this roll can instantaneously change, as shown in Figure 2: the hydraulic cavities of making hollow in the four-high mill backing roll, in the chamber, fill hydraulic oil, in the operation of rolling, with the variation of process conditions with changeable pressure, the pressure of constantly adjusting hydraulic oil changes the swell increment of roll, and the elastic bending deflection that compensates roll at any time is to obtain good plate shape.But problem is: the actual flexion distortion of determining roll is not a nothing the matter.
Method the most frequently used at present, the most basic, state-of-the-art control panel shape is a hydraulic bending roll, and hydraulic bending roll is actually with the method for machinery and gives initial convexity of roll, so its effect is identical with the effect of initial roll crown method.As shown in Figure 3, a is that just curved working roll, b are that negative curved working roll, c are just curved backing rolls, its basic principle is: by applying hydraulic bending roll power to working roll or backing roll roll neck, change effective convexity of roll instantaneously, thereby the extension of band steel is along cross direction profiles after changing the carrying roll gap shape and rolling, as long as suitably select hydraulic bending roll power, just can reach the purpose of improving plate shape according to concrete process conditions.Even so, but still have certain limitation.At first, it is to realize by the very big roll of flexural rigidity, so just needs very big bending roller force, and these bending roller forces finally will pass to mill housing by screwdown gear, and last memorial archway is absorbed with elongation, has so just increased the stressed of memorial archway and distortion.Secondly, hydraulic bending roll will be obtained good plate shape, must guarantee that the final curves of roller are near conic section, and in fact milling train when rolling because the influence that the wearing and tearing and the convexity of being heated change, the curve shape more complicated, therefore, the flatness defect that some more complicated usually occur.These depend merely on hydraulic bending roll is insurmountable.For this reason, Japanese firm and the Nippon Steel Corporation's joint research and development six-high cluster mill that makes new advances, be called for short HC milling train (High Crown) and see Fig. 4, the HC milling train has been eliminated the moment of flexure that contact pressure formation between the outer backing roll of plate wide region and the working roll, though improved plate shape control ability, but the ratio convexity still keeps constant when cold rolling, and stronger strip crown control ability is just arranged during hot rolling.Therefore, the HC milling train improves not obvious to cold-rolled plate and strip transverse gage precision.
In sum as can be seen, strip shape quality and thickness and precision in order to improve strip develop into adjustable crown roller by original crown roller, and then develop into hydraulic bending roll again, HC milling train etc.The appearance of these milling trains and use, make board rolling production that great changes take place, the quality of strip has had large increase, but above-mentioned milling train is not structurally still broken away from two point supportings and is reached the traditional structure form that two fulcrums are depressed, the improvement of milling train also just reduces the elastic bending deflection of roll or remedies the elastic bending deflection of roll, milling train is when work, and the elastic bending deflection of roll still exists significantly.
From static pressure The Application of Technology situation, though at present hydrostatic support is used on various machineries, instrument and the military equipment more, the maximum of usefulness are hydrostatic bearings.Comparatively speaking, radially the hydrostatic bearing draw ratio is little, and draw ratio 1/d and is the opposed homalographic oil pocket of full week sealing about 1.
The purpose of this utility model is: on the basis of forefathers' research, start with from equipment, by changing the supporting principle and the structure of rolling equipment, eliminate the elastic bending deflection of roll when work, be equipped with the AGC system to scheme to obtain the good and high strip product of transverse gage precision of plate shape, produce the strip section product that thickness and precision is very high in length and breadth.
Of the present utility model being characterised in that:, replace two point supportings of general milling train with uniform whole hydrostatic support the milling train backing roll body of roll hydrostatic support body of all packing into.For backing roll is contacted with working roll, the hydrostatic support body is designed to (the open type hydrostatic support) of opening in two roller contact portions, screwdown gear is a wedge formula screw-down, this mechanism is by hydraulic pressure or worm drive, be installed on the hydrostatic support body and connect between the crossbeam, depress with uniform integral body and replaced two fulcrums of former milling train to depress with two frames.This version, when rolling, roll-force balances each other with the uniform hydrostatic support power that acts on the body of roll, no longer produce moment of flexure in the roll, thereby the elastic bending deflection of roll takes place no longer.Theoretically, this version can be eliminated the elastic bending deflection of roll fully, and in fact owing to the influence of various factors, the elastic bending deflection of roll can only be reduced to not half, so can abbreviate little amount of deflection milling train as.The milling train of this version can not only guarantee the transverse gage precision of strip section and good plate shape, and can improve the longitudinal thickness precision of strip significantly.Elastic bending deflection does not take place in roll, thereby makes the cross section of strip material eliminate strip crown, so no matter how roll-force changes, the transverse gage size of strip is consistent.So just guaranteed strip material transverse gage precision, realized that the horizontal rigidity infinity of milling train is rolling.And the vertical rigidity of milling train is had the greatest impact by the flexural deformation of roll, because the flexural deformation of little amount of deflection rolling mill roll is eliminated, the rigidity of milling train can obviously improve.
Feature of the present utility model also is: can adopt the working roll of minor diameter, but also can adopt the backing roll of minor diameter.The bearing capacity of general milling train depends primarily on the strength and stiffness condition of roller system, and little amount of deflection milling train is because roll barrel applies whole hydrostatic support and integral body is depressed, and elastic bending deflection no longer takes place roll, and the rigidity condition of roll has obtained sufficient assurance.Simultaneously, the moment of flexure of roll is eliminated, and the intensity of roll is improved significantly.Because work roll diameter is very big to the rolling properties influence of milling train, so adopt very little work roll diameter, the function that then can replace multi-roll mill, simplify the structure of milling train, and work roll diameter reduces to reduce roll-force and roll torque, therefore, can realize depressing greatly rolling or minimizing rolling pass or increase supplied materials thickness, therefore the bearing capacity of milling train and production efficiency all are greatly improved.
Feature of the present utility model also is: the milling train body construction is simplified relatively.Little amount of deflection milling train is owing to eliminated the elastic bending deflection of roll, and the method and apparatus for compensation roll elastic bending deflection can save so, uses general plain-barreled roll to get final product.So not only the structure of milling train is simplified, and processing technology is simple and easy to do, and this milling train can use the backing roll of minor diameter, and the reducing of backing roll can make mill stand contour dimension obviously reduce.The utility model can replace multi-roll mill when adopting very the minor diameter working roll, compares with multi-roll mill like this, and the utility model is just much simple.
Feature of the present utility model also is: roll is whole hydrostatic support.According to the characteristics of roll work, the hydrostatic support body supports to such an extent that be the whole body of roll part of roll, so the more general supporting on length of hydrostatic support body is longer, 1/d is bigger with dynamic and static pressure lubricating term draw ratio, 1/d 〉=2.And milling train dynamic and static pressure draw ratio is about 1.The big reason of draw ratio except that roll barrel is long, also with adopt less backing roll diameter relevant.Rolling in order to realize, make backing roll and working roll even contact, the hydrostatic support body is to backing roll, and its radial section is the non-full week sealing less than 360 °, is called for short the open type hydrostatic support.As shown in Figure 5, no matter backing roll transmission or working roll transmission, backing roll must rotate could realize rolling.Therefore, guarantee that roll rotates freely and can realize hydrodynamic lubrication in the hydrostatic support body, for guaranteeing that roll has bigger and stable hydrostatic support rigidity in the hydrostatic support body, the hydrostatic support body is offered a plurality of oil pockets that non-opposed area does not wait on week in the garden, can be three oil pockets, six oil pockets, heavy wool chamber.For avoiding backing roll little elastic bending deflection to occur in the hydrostatic support body, axial direction is offered a plurality of oil pockets in the hydrostatic support body, and the total length in oil pocket district is suitable with working roll length.
The hydrostatic support oil supply system of this support is similar to general hydrostatic bearing oil supply system.Different, because the rolling load of milling train is bigger, so select super-pressure pump usually for use.The hydraulic oil that comes from super-pressure pump flows in the hydrostatic support body by choke valve, and choke valve can adopt side valve type choke valve, diaphragm type choke valve, clearance type choke valve, capillary-compensated valve etc.Because hydrostatic support is that non-complete all envelopes are close, the oil that flows out from supporting mass flows between working roll and the rolled piece through the working roll roll surface, plays cooling and lubrication to rolled piece, is pooled to oil drain pan then, gets back to fuel tank after filtration.
Specify the utility model each position component relation and assembly relation below in conjunction with Fig. 5: backing roll (3) is packed in the support holes of hydrostatic support body (2), by circle baffle plate (4) axial location, circle baffle plate (4) is fixed on hydrostatic support body (2) by bolt (5) and goes up composition backing roll system.
The two end axles of working roll (6) is formed the working roll system in the working roll bearing block of packing into (7).
Drift (12) presses mechanism with drift (14) composition, drift (12) is fixed on the hydrostatic support body (2) by bolt (13), drift (14) itself is processed with hydraulic cylinder (19), piston (15) is packed in the hydraulic cylinder (19) of drift (14), and piston (15) is fixed on the support (17) by nut (16).
Backing roll system, working roll system and pressuring upper device push the window of frame (1) from frame (1) active side integral body then by order shown in Figure 5 assembling, carry out axial location by baffle plate (11) two in the face of backing roll system and working roll system.The support of pressuring upper device (17) is fixed on the frame (1) by bolt (18).
The bascule of roller system is identical with general four-high mill, is made up of hydraulic ram cylinders.Plunger case (9) is installed in the two ends of working roll bearing block (7), and in order to the weight between the balance working roll system, plunger case (8) is installed in the two ends of hydrostatic support body (2), in order to the weight between the balanced support roller system.
Fig. 5 is the specification digest accompanying drawing.
Laboratory experiment adopts Fig. 5 structure, and the hydrostatic support oil supply system adopts simple capillary-compensated valve, and experiment effect is good.
Roll described in the utility model can adopt the metal roll, also can adopt ceramic roll.
Claims (4)
1, the cold-rolling mill support of a kind of rolled sheet metal band and ultra-thin strip, by frame (1), backing roll (3), hydrostatic support body (2), working roll (6), working roll bearing block (7), press (depressing) mechanism, the roller series balance device is formed, it is characterized in that: the body of roll of the backing roll (3) in the whole hydrostatic support backing roll system is all packed in the hydrostatic support body (2), and by circle baffle plate (4) axial location, circle baffle plate (4) is fixed on the hydrostatic support body (2) by bolt (5); The drift (12) that integral body presses (depressing) mechanism is fixed in the hydraulic cylinder (19) that hydrostatic support body (2) is gone up, drift (14) itself is processed with hydraulic cylinder (19), piston (15) is packed drift (14) into, also is fixed on the support (17) by nut (16) by bolt (13).
2, the cold-rolling mill support of rolled sheet metal band according to claim 1 and ultra-thin strip, it is characterized in that: hydrostatic support body (2) is an opening in backing roll (3) and working roll (6) contact portion, be hydrostatic support body radial section for less than 360 ° non-full week sealing and have three oil pockets, six oil pockets or the heavy wool chamber that non-opposed area does not wait, the axial direction of hydrostatic support body (2) is offered uniform heavy wool chamber, and the total length in oil pocket district is suitable with working roll length.
3, the cold-rolling mill support of rolled sheet metal band according to claim 1 and ultra-thin strip, it is characterized in that: the ratio of hydrostatic support body length and roll diameter of roller is bigger, draw ratio 1/d 〉=2.
4, the cold-rolling mill support of rolled sheet metal band according to claim 1 and ultra-thin strip is characterized in that: can adopt the working roll of minor diameter, also can adopt the backing roll of minor diameter, the material of roll can be a metal, also can select pottery for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90219189 CN2084397U (en) | 1990-10-16 | 1990-10-16 | Integral pressing cold rolling machine frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90219189 CN2084397U (en) | 1990-10-16 | 1990-10-16 | Integral pressing cold rolling machine frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2084397U true CN2084397U (en) | 1991-09-11 |
Family
ID=4897904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90219189 Expired - Lifetime CN2084397U (en) | 1990-10-16 | 1990-10-16 | Integral pressing cold rolling machine frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2084397U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999011396A1 (en) * | 1997-09-04 | 1999-03-11 | Hongzhuan Zheng | A mill for rolling strips or plates |
| CN100364679C (en) * | 2002-05-29 | 2008-01-30 | Sms迪马格股份公司 | Device for influencing in a controlled manner the load pressure of pressure rollers |
| CN101264482B (en) * | 2007-03-14 | 2010-09-01 | Ihi金属生产设备科技株式会社 | Series changing multi-stage rolling machine |
| CN102240673A (en) * | 2011-05-16 | 2011-11-16 | 北京科技大学 | High-rigidity rolling mill |
| CN102560053A (en) * | 2011-12-15 | 2012-07-11 | 宁夏共享集团有限责任公司 | High and medium-temperature heat treatment deformation preventing device for large turbine blades |
| CN102950151A (en) * | 2011-08-17 | 2013-03-06 | Sms米尔股份有限公司 | Method and device for producing a cold pilgered pipe |
| CN107649518A (en) * | 2017-11-07 | 2018-02-02 | 扬州诚德重工有限公司 | A kind of horizontal four-roller barrier part milling train |
| CN108435797A (en) * | 2018-03-19 | 2018-08-24 | 包头钢铁（集团）有限责任公司 | The determination method and roll of roller surface curve |
| CN108526223A (en) * | 2018-04-04 | 2018-09-14 | 包头钢铁（集团）有限责任公司 | The determination method and roll of roller surface curve |
-
1990
- 1990-10-16 CN CN 90219189 patent/CN2084397U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999011396A1 (en) * | 1997-09-04 | 1999-03-11 | Hongzhuan Zheng | A mill for rolling strips or plates |
| AU750839B2 (en) * | 1997-09-04 | 2002-08-01 | Linzhen Zhao | A mill for rolling strips or plates |
| CN100364679C (en) * | 2002-05-29 | 2008-01-30 | Sms迪马格股份公司 | Device for influencing in a controlled manner the load pressure of pressure rollers |
| CN101264482B (en) * | 2007-03-14 | 2010-09-01 | Ihi金属生产设备科技株式会社 | Series changing multi-stage rolling machine |
| CN102240673A (en) * | 2011-05-16 | 2011-11-16 | 北京科技大学 | High-rigidity rolling mill |
| CN102240673B (en) * | 2011-05-16 | 2013-05-22 | 北京科技大学 | High-rigidity rolling mill |
| CN102950151A (en) * | 2011-08-17 | 2013-03-06 | Sms米尔股份有限公司 | Method and device for producing a cold pilgered pipe |
| CN102560053A (en) * | 2011-12-15 | 2012-07-11 | 宁夏共享集团有限责任公司 | High and medium-temperature heat treatment deformation preventing device for large turbine blades |
| CN102560053B (en) * | 2011-12-15 | 2013-09-25 | 宁夏共享集团有限责任公司 | High and medium-temperature heat treatment deformation preventing device for large turbine blades |
| CN107649518A (en) * | 2017-11-07 | 2018-02-02 | 扬州诚德重工有限公司 | A kind of horizontal four-roller barrier part milling train |
| CN108435797A (en) * | 2018-03-19 | 2018-08-24 | 包头钢铁（集团）有限责任公司 | The determination method and roll of roller surface curve |
| CN108526223A (en) * | 2018-04-04 | 2018-09-14 | 包头钢铁（集团）有限责任公司 | The determination method and roll of roller surface curve |
| CN108526223B (en) * | 2018-04-04 | 2023-08-25 | 包头钢铁（集团）有限责任公司 | Method for determining roller surface curve and roller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112845607B (en) | Asynchronous rolling mill with super-large diameter ratio and plate rolling method | |
| CN2084397U (en) | Integral pressing cold rolling machine frame | |
| CA2182832A1 (en) | Method of compensating forces in roll stands resulting from horizontal movements of the rolls | |
| GB2163690A (en) | Roll stand | |
| CN101549354B (en) | Six-roller mill | |
| CN2930899Y (en) | 8-roller mill | |
| US3593556A (en) | Rolling mill with prestressed housing | |
| CZ298565B6 (en) | Rolling mill for producing plane rolled strips having a desired strip profile super elevation | |
| EP4119248A1 (en) | Plate-shape control roller group and plate strip rolling mill | |
| CN106734193A (en) | A kind of Varied section rolls plate cold-rolling mill | |
| US4480459A (en) | Rolling mill | |
| CN105964691B (en) | A kind of new ten roll steel plates cold-rolling mill structure | |
| CN100998993A (en) | Bidimensional decomposition rolling mill | |
| US4860416A (en) | Variable-crown roll | |
| CN2250822Y (en) | 8-roller mill | |
| CN201015779Y (en) | Roller mill having the roll set base with a two-dimension unitized construction | |
| CN212093736U (en) | Plate type control roller set and plate strip rolling mill | |
| JP2524303B2 (en) | Method and device for finely adjusting rolling thickness of thin metal plate | |
| US4676085A (en) | Rolling mill for controlling the contour of a workpiece | |
| CN2686748Y (en) | High rigidity octa-roll plate-strip rolling mill | |
| JPS6239843Y2 (en) | ||
| CN2205258Y (en) | Four roller full hydraulic mill | |
| CN2686749Y (en) | Rolling mill with multi-point screwdown gear and saddle split | |
| CN200995227Y (en) | High-rigidity and small-flexiblity wide-band roller | |
| CN2518612Y (en) | New rolling stand |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |